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a Hollow sphere of mass M=1000kg and radius R=25cm is rolling down of an incline plans making an angle with horizontal. calculate the angular acceleration of hollow sphere
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 440-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the a
A step-down transformer is used for recharging the batteries of portable devices. The turns ratio N2/N1 for a particular transformer used in a CD player is 7:72. find rms output voltage of the trans
A 19.0cm × 19.0cm square loop of wire lies in the xy-plane with its bottom edge on the x-axis. What is the size of the induced current in the loop at t = 0.550s
Two 2.50-cm-diameter disks spaced 1.70mm apart form a parallel-plate capacitor. The electric field between the disks is 5.00×105V/m. What is the voltage across the capacitor
A constant current of I = 15 A exists in a solenoid whose inductance is L = 42.2 H. The current is then reduced to zero in a certain amount of time. If the current goes from 15 to 0 A in a time of 7
50 g of gasoline are mixed with 38 g of water. What is the average density of the mixture
A cylindrical tank 3.0m deep is full to the brim with water. Sunlight first hits part of the tank bottom, Find the tank's diameter.
A bug of mass 1.0 grams is caught up in the center of an oscillating spider web. show that this motion is generated by hooke's law force, f=-kx
How much work does Bob do on the rock and How much force, assumed to be constant, does Bob apply to the rock
A cannon tilted up at a 30° angle fires a cannon ball at 65 m/s, What is the ball's impact speed on the ground below
A black hole attracts an object with mass m with a force of mc2RS/(2r2), where r is the distance between the object and the center of the black hole. What is the mass of this black hole
A certain laser emits light in a narrow band of wavelengths centered at 632.7 nm and with a ''wavelength width'', What is the corresponding ''frequency width'' in hertz for the emission
A unifrom rod of length L = 2.00 and mass m = 1.10 kg is attached to a frictionless pivot through one of its ends. Find the linear speed of the tip of the rodas it passes through the vertical
As a 13,800 kg jet plane lands on an aircraft carrier, its tail hook snags a cable to slow it down. what was the plane's landing speed
A source delivers an AC voltage of the form change in v = 98.0 sin (80(pi)t), where change in v is in volts and t is in seconds, to a capacitor. Find the frequency of the source
The magnetic field perpendicular to a circular wire loop 11.2cm in diameter is changed from +0.50Tto -0.33T in 130ms, In what direction does the induced current flow?
Molecules act as tiny springs and have vibration energy and frequency. The frequency of CO molecule is 6.42 x 1013Hz. Calculate the spring constant using the effective mass
A pulsed proton beam is fireat a target each last 45.0ns and there 3.00 X 10^9 protons in each pulse, What is the average pressure on the beam spot during the pulse if the protons are absorbed by the
An isolated parallel plate capacitor contains charge Q = +10uC on its plates, correponding to a potential difference of 10V. What is the voltage between the two plates after the separation becomes 2d
two point charges are on the y axis. A 3.50 uc charge is located at y=1.1cm, and a -2.16 uc charge at y=-1.4cm. find the total electric potential at origin in volts
A 20t space craft leaving the dock of a space stationmakes a 12s engine burn. find the final speed of the space craft with respect to the station
The angular position of a point on the rim of a rotating wheel is given by ? = 7.68t - 5.13t2 + 1.73t3, where ? is in radians and t is in seconds. find the angular velocities at the end of this time
A meter stick is pivoted at its 50-cm mark but does not balance because of non uniformities in its material that cause its center of gravity to be displaced from its geometrical center. Find the mas
A 14.0-m uniform ladder weighing 510 N rests against a frictionless wall. The ladder makes a 63deg angle with the horizontal. what is the coeffecient of static friction between ladder and ground